Piers Morgan is no stranger to controversy, but his tweets tonight about Ariana Grande may be a step too far.

The GMB presenter and journalist has angered his followers by arguing that the traumatised singer should have stayed in the UK to visit her injured fans and the families of the dead victims instead of flying home to Florida.

Ariana, 23, left the country on Tuesday, just hours after a suicide bomber blew up his rucksack in the foyer of the Manchester Arena, killing 22 and maiming countless others.

She was spotted flying in to Boca Raton in Florida, with her mum Joan Grande in tow, being met by her boyfriend Mac Miller.

Ariana has flown back to the States to be with her boyfriend and family (Image: Getty)

Ariana and her team have since cancelled a string of her Dangerous Woman world tour dates, including two in London this week.

While the star did tweet in the hours after the attack, she is yet to publicly speak about the events of Monday night.

With the Queen visiting injured teens at Royal Manchester Children's Hospital today, Katy Perry tweeted a message of support - which Piers immediately jumped on.

Piers believes Ariana should have stayed in the UK (Image: ITV)

He insisted the young singer did the wrong thing in leaving the country (Image: ITV)

"God bless The Queen and her kind heart," wrote Katy.

"Agreed. Might have been nice if @ ArianaGrande had stayed to do the same," replied Piers.

Amid a wave of disagreement, including those who pointed out the young singer was no doubt traumatised by what had happened, Piers defended his position.

"Probably not as much as those killed & wounded. She should have stayed to visit her injured fans," he posted.

Piers came under fire for his insistence that he would have stayed to visit the victims if he was in the same position (Image: ITV)

"I expected better from her. Her fans have been decimated. Stay, visit, comfort."

When one follower flagged Ariana's young age, Piers shot back: "23 is not a child."

He then suggested that he would "100%...stay & visit those who had been killed or wounded watching me perform" had he been in Ariana's position.

Piers then finished off with: "It struck me as odd that the Queen would visit the wounded fans & not the star who they had paid to watch."